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Related to aurorae: aurora borealis


A plural of aurora.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Mahwah, NJ, November 14, 2012 --( Aurorae Yoga, a Mahwah, New Jersey-based yoga e-retailer, learned that in the last 365 days ending on November 5, 2012, they ranked in the Top 3% of all sellers.
Aurorae are caused when charged particles stream along the magnetic field of a planet and into its atmosphere.
Solar activity is on the wane; hence, so are the prospects for aurorae visible from midlatitudes.